The new couple on the block is none other than comedienne Jenny McCarthy and New Kids on the Block singer Donnie Wahlberg, a source tells Us Weekly. The pair, who have frequently tweeted at one another via social media, are officially an item, the source confirms.

"Yes, they recently started dating and are having a lot of fun," another pal tells Us. "They had a blast 4th of July hanging out with a bunch of their friends." A rep for Wahlberg had no comment.

The couple spent the Fourth of July together and were spotted with pal (and fellow NKOTB member) Jonathan Knight and his boyfriend Harley.

Wahlberg, 43, appeared as a guest on McCarthy's talk show, "The Jenny McCarthy Show," earlier this year in March, and the pair got cheeky discussing a wide range of topics, including what kind of pillow talk the boy bander is into.